<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8"/>
        <title></title>
        <style type="text/css">
            #p1{color: gray;}
            #p2{color: orange;}
            #p3{color: red;}
        </style>
    </head>
    <body>
        <p id="p1">字体颜色为灰色</p>
        <p id="p2">字体颜色为橙色</p>
        <p id="p3">字体颜色为红色</p>
    </body>

</html>